How many gallons are in an 18-foot vinyl pool?

Answer 1

30536.28 gallons By figuring your pool's depth, you can then determine how much water your pool holds. This is how you would find the average depth: shallow end depth + deep end depth divided by 2. Rectangular pool: Lenght x Width x average depth x 7.5 total gallons. Oval pool: full width x full length x average depths x 5.9 total gallons. Sloping sides: If your pool has sloping sides, multiply the final figure by .85. Hope this helps. === === An 18 foot round by 42``tall pool holds 7300 to 7500 gal.